Title :
Merger system optimization in BNL´s high current R&D ERL
Author :
Kayran, Dmitry ; Litvinenko, Vladimir N.
Author_Institution :
Brookhaven Nat. Lab., Upton
Abstract :
A super-conducting RF R&D energy recovery linac (ERL) is under construction at Brookhaven National Laboratory (BNL). This ERL will be used as a test facility to study issues relevant to high-current, high-brightness beams. One of the goals is to demonstrate an electron beam with high charge per bunch (˜ 5 nC) and extremely low normalized emittance (˜ 5 mm-mrad) at an energy of 20 MeV. In contrast with operational high-brightness linear electron accelerators, all presently operating ERLs have order of magnitude larger emittances for the same charge per bunch. One reason for this emittance growth is that the merger system mixes transverse and longitudinal degrees of freedom, and consequently violates emittance compensation conditions. A merger system based on zigzag scheme resolves this problem. In this paper we discuss performance of the present design of the BNL R&D ERL injector with a zigzag merger.
Keywords :
accelerator RF systems; electron accelerators; electron beams; linear accelerators; particle beam bunching; particle beam dynamics; particle beam injection; proton accelerators; Brookhaven National Laboratory; SRF Injector; electron beam; electron volt energy 20 MeV; emittance growth; high-brightness linear electron accelerators; particle beam bunching; super-conducting RF R&D energy recovery linac; zigzag merger; Acceleration; Cathodes; Corporate acquisitions; Electron beams; Laboratories; Linear particle accelerator; Radio frequency; Research and development; Solenoids; Space charge;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4440542
